@BreatheAndFocus - I would love to think you are right, and kids would either simply accept a boy in gingham shorts, or would just need it explained that clothes have no gender - but my fear is that there are still cruel, judgemental kids, and it only takes a few, to make a child’s life a misery.
As @garlictwist says, kids just want to fit in. I didn’t fit in at school - my mum made some of my clothes, and wouldn’t let me have clothes that even slightly fitted the ‘rules’ of what was fashionable then, and I hated it. I think it contributed to me being bullied at school.
Of course it shouldn’t be like this. No kid should be bullied for what they’re wearing, and in an ideal world, it wouldn’t happen. But I can also see why a parent would r want their child to become the bullies’ target, for something they as the parent can influence - getting them the grey shorts instead of gingham ones, for example.